Improvement in boat-detaching appaeatus



N. M. RAYOF ELLSWORTH,MAINE..

Letters Patent 82,550, dated September 29, 1868.y

IMPROVEMENT. IN BOAT-DETAGHING APPARATUS.

T O ALL WHOM IT MAY vI;ONCERN:

Be it known Vthat I, N. M. RM', of Ellsworth, inthe county of Hancock,and State of Maine,'have invented a new and useful Improvement YinDavit-Blocks and Hooks; and I do hereby declare that the following is afull, clear, and exact description thereof, which will enable othersskilled in the art to make and use the same, reference being had to theaccompanying drawings,forming part of this speciiication, in which- YFigure 1 is a .seetional side view oi' my invention. Figure gis a detailside View of the hook. 'Similar'-letters of reference indicate likeparts. The object. of this invention is to accomplish the unhooking ofboat-tackles without the necessity of a person getting into the boat,whereby the boat may be detached safely and expeditiously, while thevesselis under headway, orwhen there is much sea on, without liabilityto fill or swamp.

It'consists of a block, provided with detaching-mechanism, theconstruction and operation ofwhich will be hereinafter more fullyseteforth. A v

AIn the drawings, A isfany suitable tackle-block, having a metal strap,B, to which latter is aiixed a hoekextension, C. The ring of the boatisheld on this hook-extension by means oi' a lever, D, which is pivoted toa projection, E, forming part of the hook-extension.Y Y

The Vlower` arm of this lever is provided with a line or rod, d,betweenwhich and the lever, the ring H, of

the boat, is located when on the hook.

The lever is actuated to open from the hook by means ofa'band, G,sliding freely on-the hook-extension, and on the lever, tha-tis to say,encircling the two: This band is moved up 01 down by a rod, which isattachedto the band b y .any suitabledevice, as the pivoted yoke a.

The lever is slightly curved, as shown, so that when the rod is pulledupward, thc band will slip .on the lever andliook-extension, andv openthe hook, as shownv at iigl2. This operation of opening causes the tinecl' to slip the-ring off from the horizontal part e, thus detaching theboat.

When the .band G isrslipped down, the lever is held firmly tothe part e,making a complete eye, which securely retains the ring.

' y A tripping-line is attached to the rod as shown, and the free end isretained on deck, and when the boat is lowered nearly tothe water, thelsaid line is jerked, which liberates the boat. `v

In practice, two blocks are generally required, one for each endof theboat. When the boat is hauled up to the davits, the end of the rod bwill be brought in contact therewith, and theband thus held downsecurely, thus avoiding the danger of'accidentally detaching the boat.

Having thus described'niy invention, I claim as new, and desire tosecure by Letters Patent- The lever D, tine cl, rod4 b, and extension Cc, in combination with a tackle-block, A, all substantially as shown anddescribed, and for the purpose set forth. i

I The above specification of my invention signed byine, this fth day ofJune, 1868.

N. M. RAY.

Witnesses:

N. A. JOY, N. C. REYNOLDS.'

